Answer / ram

ya i thing is correct

Answer / taylor

thanx guys b cas of ya ans i m able 2 complete my projeck
so thanx!!!!!!!!!!1

Answer / rohit singla

UPS is an electronic device which functions as alternative
power source which supply power continuosly to the senstive
electronic devices under circumstances

Answer / chandrahasan

The main building blocks of any given UPS (on-line, off-line
or stand-by) are the charger, inverter, static switch or
static disconnect and battery. The charger converts AC to DC
power which float charge is the battery and feeds
the inverter. The inverter converts DC to AC power, and the
static switch or static disconnect is a solid-state device
used to apply or disconnect AC power. The battery stores DC
power that is used as a back-up power source when
the utility power is not available.

Answer / rk mehta

dear sir,
I have a 2.5kva uniline ups,which works on 148 dc
source, but at present i donot have dc power source, now on
connecting it on ac source it gives indication of presence
of line but on pressing start button nothing happens. is it
possible to switched on the same ups without connecting the
dc source.

Hi! iam Rajanikanth.Can u tell me FAQ's of AP TRANSCO.

1 Answers   APTransco,

The windings of a transformer are divided into several coils, because?

0 Answers  

What is the differance between vacuum breaker and vacuume contactor

1 Answers  

I have two power supply.a)govt. power b)Captive power.3 phase load connected inside factory.when source change govt. source to captive some motor rotate reverse. Is phase sequence changes when if off & on?If I off generator & on it again is it possible to get changed phase sequence??

4 Answers   ABB,

What is difference between A.C & D.C Resistance ?

4 Answers  

1500Ah VRLA battery,if its weight is designed 125kg during maufacturing its weight is reduced to 85kgs,What will be impact on AH capacity,life & economy?

0 Answers   Bajaj,

Shall we get electrical shock if we touch the positive terminal of a 230 volt dc supply?

22 Answers   Essar,

what is the AC Plant and how can do the work with parts and picture tell us 150 Tr

0 Answers   Wipro,

Write a note on materials used as a fuse element.

0 Answers   Bhel,

In 63kva LT Distribution Box Why the outgoing of 63A kit kat is connected to 200 A link disconnector? as the output of kit kat is only 63 A?

1 Answers   Godrej, Patel,

What are the major reasons for balancing hydro-thermal mix?

0 Answers  

What is transmittance?

0 Answers